EP0453619A1 - Multilayered ground for areas in which water polluting substances are poured or transferred - Google Patents

Multilayered ground for areas in which water polluting substances are poured or transferred Download PDF

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Publication number
EP0453619A1
EP0453619A1 EP90108137A EP90108137A EP0453619A1 EP 0453619 A1 EP0453619 A1 EP 0453619A1 EP 90108137 A EP90108137 A EP 90108137A EP 90108137 A EP90108137 A EP 90108137A EP 0453619 A1 EP0453619 A1 EP 0453619A1
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EP
European Patent Office
Prior art keywords
barrier layer
layer
bentonite
sand
mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90108137A
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German (de)
French (fr)
Inventor
Kurt Krispin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JET Tankstellen Deutschland GmbH
Original Assignee
Conoco Mineraloel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Conoco Mineraloel GmbH filed Critical Conoco Mineraloel GmbH
Priority to EP90108137A priority Critical patent/EP0453619A1/en
Publication of EP0453619A1 publication Critical patent/EP0453619A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B1/00—Dumping solid waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/24—Spillage-retaining means, e.g. recovery ponds
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00—Pavings made of prefabricated single units
    • E01C5/003—Pavings made of prefabricated single units characterised by material or composition used for beds or joints; characterised by the way of laying
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution

Definitions

  • the invention relates to a multilayer floor for places for filling and decanting of water-polluting substances, such as in particular hydrocarbons.
  • water-polluting substances such as in particular hydrocarbons.
  • the places mentioned here are to be understood in particular as petrol stations and all other areas where contamination of the floor with water-polluting substances is possible, such as car wash stations etc.
  • the aim of the invention is to provide a multilayer floor for filling and decanting places, in particular of hydrocarbons, which is inexpensive to produce and offers a high level of security against the ingress of water-polluting pollutants, in particular of hydrocarbons, into the ground.
  • the floor according to the invention should also have good stability.
  • this object is achieved by a barrier layer containing clay.
  • Bentonite is preferably used as the clay, in particular of the Montigel F type.
  • the invention is therefore based on the knowledge that bentonite is well suited as at least a partial material of a barrier layer for the purposes mentioned above.
  • the barrier layer has a mixture of gravel, sand and bentonite.
  • the mixture is preferably composed of 40 to 80% gravel, 10 to 40% sand and 5 to 30% bentonite.
  • the proportion of bentonite is preferably around 10%.
  • the Montigel F type is preferably used as the bentonite.
  • the barrier layer is compressed during installation.
  • Their thickness is preferably between 6 and 20 cm, particularly preferably about 10 cm.
  • the barrier layer is preferably subjected to compaction, the density of the barrier layer achieved should be greater than 2.0 t / m 3, preferably greater than 2.1 t / m 3.
  • Irrigation is also preferably carried out according to the invention in order to seal the mineral barrier layer and possibly joints containing bentonite in a plaster layer arranged above the barrier layer against the ingress of pollutants.
  • the barrier layer can be watered over a period of more than one day, preferably more than two days, in particular by joints in the plaster layer provided above the barrier layer.
  • the invention proposes to provide a bentonite content in the joint material.
  • a coating of bentonite "pure” is provided, preferably with a mixing ratio greater than 12%.
  • This “pure” bentonite primer should cover the barrier layer as far as possible, ie it should be drawn in from the edge under the barrier layer.
  • the figure schematically shows a vertical section through a floor according to the invention for a gas station or the like.
  • a frost protection layer 12 known as such and having a thickness of 20 cm according to DIN 18315 is arranged above the frost-proof soil 10 present.
  • a barrier layer 16 in the exemplary embodiment shown consisting of a compressed mixture containing gravel, sand and bentonite.
  • the mixing ratio in the exemplary embodiment is 65% gravel, 25% sand and 10% bentonite with the trade name Montigel F.
  • the gravel can have a grain size of 4 to 16 mm and the sand a grain size of 0 to 2 mm.
  • the mineral barrier layer 16 is compressed in the dry state.
  • the dry density is 2.0 t / m3 (with a water content of 7%).
  • the water in the pore space is bound to the bentonite due to its high water absorption capacity and has a repellent effect on fuels due to capillary forces, since these hardly dissolve in water.
  • Dry densities of 2.1 t / m3 are achieved and the water permeability (according to DIN 18130) is approximately 4 x 10 ⁇ 11 m / s when the sample is completely saturated.
  • the dry density should be over 1.8 t / m3 and the water content should be between 7 and 13%.
  • the mineral barrier layer 16 obtained in this way has good load behavior.
  • Composite stone paving 20 with joints 22 is located above the barrier layer 16.
  • the joints 22 have a thickness of 3 mm and are slurried with sand / cement 3: 1.
  • the joints 22 of the composite stone paving 20 consist of sand / cement slurries with an addition of a so-called fine mixture of sand and bentonite.
  • the sand / cement slurries in the exemplary embodiment have a ratio of sand to cement equal to 3: 1.
  • the addition of the fine mixture of sand and bentonite is 5 to 20, preferably 10%.
  • the grain size of the sand is 0 to 2 mm and the ratio of sand to bentonite is preferably 5: 2.
  • edges of the floor can also be sealed with a bentonite primer.
  • the floor according to the invention offers protection against pollutants, in particular hydrocarbons, since no crosslinking occurs between the hydrophobic hydrocarbon and the hydrophilic barrier layer.
  • pollutants in particular hydrocarbons
  • the high bentonite content of 10% by mass or more in the mineral barrier layer increases the sorbability considerably.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Paving Structures (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Multilayered ground for areas in which water-polluting substances, in particular hydrocarbons, are poured or transferred, has a barrier layer (16) containing bentonite. <IMAGE>

Description

Die Erfindung betrifft einen mehrschichtigen Boden für Plätze zum Ab- und Umfüllen von wassergefährdenden Stoffen, wie insbesondere Kohlenwasserstoffen. Unter den hier genannten Plätzen sind insbesondere Tankstellen und alle sonstigen Flächen zu verstehen, bei denen eine Kontaminierung des Bodens mit wassergefährdenden Stoffen möglich ist, wie Kfz-Waschplätze etc.The invention relates to a multilayer floor for places for filling and decanting of water-polluting substances, such as in particular hydrocarbons. The places mentioned here are to be understood in particular as petrol stations and all other areas where contamination of the floor with water-polluting substances is possible, such as car wash stations etc.

Es herrscht ein wachsendes Bedürfnis, im Rahmen des Umweltschutzes das Eindringen von Schadstoffen in den Boden zu verhindern. Dies gilt besonders für Kohlenwasserstoffe, wie Benzin, Öl etc.There is a growing need to prevent pollutants from entering the soil as part of environmental protection. This applies particularly to hydrocarbons such as petrol, oil etc.

Die Erfindung setzt sich das Ziel, einen mehrschichtigen Boden für Ab- und Umfüllplätze von insbesondere Kohlenwasserstoffen bereitzustellen, der kostengünstig herstellbar ist und eine hohe Sicherheit gegen das Eindringen von wassergefährdenden Schadstoffen, insbesondere von Kohlenwasserstoffen in das Erdreich bietet. Der erfindungsgemäße Boden soll neben seiner Funktion zum Sperren des Durchtrittes von Schadstoffen auch eine gute Stabilität aufweisen.The aim of the invention is to provide a multilayer floor for filling and decanting places, in particular of hydrocarbons, which is inexpensive to produce and offers a high level of security against the ingress of water-polluting pollutants, in particular of hydrocarbons, into the ground. In addition to its function to block the passage of pollutants, the floor according to the invention should also have good stability.

Erfindungsgemäß wird diese Aufgabe gelöst durch eine Ton enthaltende Sperrschicht. Als Ton wird bevorzugt Bentonit verwendet, insbesondere vom Typ Montigel F.According to the invention, this object is achieved by a barrier layer containing clay. Bentonite is preferably used as the clay, in particular of the Montigel F type.

Der Erfindung liegt also die Erkenntnis zugrunde, daß Bentonit als zumindest Teilmaterial einer Sperrschicht für die oben genannten Zwecke gut geeignet ist.The invention is therefore based on the knowledge that bentonite is well suited as at least a partial material of a barrier layer for the purposes mentioned above.

Gemäß einer bevorzugten Ausgestaltung der Erfindung weist die Sperrschicht eine Mischung aus Kies, Sand und Bentonit auf. Das Gemisch ist bevorzugt zusammengesetzt aus 40 bis 80 % Kies, 10 bis 40 % Sand und 5 bis 30 % Bentonit. Bevorzugt liegt der Anteil des Bentonites um 10 %. Als Bentonit wird bevorzugt der Typ Montigel F verwendet.According to a preferred embodiment of the invention, the barrier layer has a mixture of gravel, sand and bentonite. The mixture is preferably composed of 40 to 80% gravel, 10 to 40% sand and 5 to 30% bentonite. The proportion of bentonite is preferably around 10%. The Montigel F type is preferably used as the bentonite.

Die Sperrschicht wird gemäß einer anderen bevorzugten Weiterbildung der Erfindung beim Einbau verdichtet. Ihre Stärke liegt bevorzugt zwischen 6 und 20 cm, besonders bevorzugt bei ca. 10 cm.According to another preferred development of the invention, the barrier layer is compressed during installation. Their thickness is preferably between 6 and 20 cm, particularly preferably about 10 cm.

Bevorzugt wird die Sperrschicht einer Verdichtung unterzogen, wobei die erzielte Dichte der Sperrschicht größer sein sollte als 2,0 t/m³, bevorzugt größer als 2,1 t/m³.The barrier layer is preferably subjected to compaction, the density of the barrier layer achieved should be greater than 2.0 t / m 3, preferably greater than 2.1 t / m 3.

Ebenfalls wird erfindungsgemäß bevorzugt eine Bewässerung durchgeführt, um die mineralische Sperrschicht und ggf. Bentonit enthaltende Fugen in einer über der Sperrschicht angeordneten Pflasterschicht gegen das Eindringen von Schadstoffen abzudichten. Die Bewässerung der Sperrschicht kann über einen Zeitraum von mehr als einem Tag, bevorzugt mehr als zwei Tagen erfolgen, insbesondere durch Fugen in der oberhalb der Sperrschicht vorgesehenen Pflasterschicht.Irrigation is also preferably carried out according to the invention in order to seal the mineral barrier layer and possibly joints containing bentonite in a plaster layer arranged above the barrier layer against the ingress of pollutants. The barrier layer can be watered over a period of more than one day, preferably more than two days, in particular by joints in the plaster layer provided above the barrier layer.

Auch bezüglich der Füllung der Fugen zwischen der über der Sperrschicht angeordneten Pflasterschicht schlägt die Erfindung vor, einen Bentonit-Anteil im Fugenmaterial vorzusehen.With regard to the filling of the joints between the plaster layer arranged above the barrier layer, the invention proposes to provide a bentonite content in the joint material.

Gemäß einer anderen Weiterbildung der Erfindung wird an den Rändern der Sperrschicht, also insbesondere an den Übergangsstellen zu Zapfinseln, Bordsteinkanten oder anderen Körpern, ein Anstrich aus Bentonit "pur" vorgesehen ist, bevorzugt mit einem Mischverhältnis größer als 12 %. Dieser Voranstrich aus Bentonit "pur" soll möglichst die Sperrschicht unterfassen, d.h. von der Kante nach innen unter die Sperrschicht gezogen sein.According to another development of the invention, at the edges of the barrier layer, that is to say in particular at the transition points to fuel pegs, curbs or other bodies, a coating of bentonite "pure" is provided, preferably with a mixing ratio greater than 12%. This “pure” bentonite primer should cover the barrier layer as far as possible, ie it should be drawn in from the edge under the barrier layer.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

Die Figur zeigt schematisch einen Vertikalschnitt durch einen erfindungsgemäßen Boden für eine Tankstelle oder dergleichen.The figure schematically shows a vertical section through a floor according to the invention for a gas station or the like.

Über dem anstehenden, frostsicheren Erdreich 10 ist eine als solche bekannte Frostschutzschicht 12 mit 20 cm Stärke nach DIN 18315 angeordnet. Über der Frostschutzschicht 12 befindet sich eine Tragschicht 14 aus einem Mineralgemisch von beim dargestellten Ausführungsbeispiel 15 cm Stärke.A frost protection layer 12 known as such and having a thickness of 20 cm according to DIN 18315 is arranged above the frost-proof soil 10 present. Over the frost protection layer 12 is a base layer 14 made of a mineral mixture of 15 cm thickness in the illustrated embodiment.

Über der Tragschicht 14 befindet sich eine erfindungsgemäße Sperrschicht 16, beim dargestellten Ausführungsbeispiel aus einem Kies, Sand und Bentonit enthaltenden, verdichteten Gemisch. Das Mischverhältnis beträgt beim Ausführungsbeispiel 65 % Kies, 25 % Sand und 10 % Bentonit mit dem Handelsnamen Montigel F. Der Kies kann dabei eine Körnung von 4 bis 16 mm aufweisen und der Sand eine Körnung von 0 bis 2 mm.Above the base layer 14 there is a barrier layer 16 according to the invention, in the exemplary embodiment shown consisting of a compressed mixture containing gravel, sand and bentonite. The mixing ratio in the exemplary embodiment is 65% gravel, 25% sand and 10% bentonite with the trade name Montigel F. The gravel can have a grain size of 4 to 16 mm and the sand a grain size of 0 to 2 mm.

Die mineralische Sperrschicht 16 wird im trockenen Zustand verdichtet. Die Trockendichte beträgt 2,0 t/m³ (bei einem Wassergehalt von 7 %). Nach dem trockenen Einbau ist es möglich, durch eine stetige, langfristige Durchfeuchtung (über mehrere Tage) ein Material mit geringem Porenraum und geringer Durchlässigkeit zu erhalten. Das Wasser im Porenraum ist am Bentonit durch dessen hohe Wasseraufnahmefähigkeit gebunden und wirkt durch Kapillarkräfte abweisend auf Kraftstoffe, da diese sich kaum im Wasser lösen.The mineral barrier layer 16 is compressed in the dry state. The dry density is 2.0 t / m³ (with a water content of 7%). After dry installation, it is possible to obtain a material with a small pore space and low permeability through continuous, long-term moisture penetration (over several days). The water in the pore space is bound to the bentonite due to its high water absorption capacity and has a repellent effect on fuels due to capillary forces, since these hardly dissolve in water.

Es werden Trockendichten von 2,1 t/m³ erreicht und die Wasserdurchlässigkeit (gemäß DIN 18130) beträgt bei vollständiger Sättigung der Probe etwa 4 x 10⁻¹¹ m/s. Die Trockendichte sollte über 1,8 t/m³ und der Wassergehalt sollte etwa zwischen 7 und 13 % liegen.Dry densities of 2.1 t / m³ are achieved and the water permeability (according to DIN 18130) is approximately 4 x 10⁻¹¹ m / s when the sample is completely saturated. The dry density should be over 1.8 t / m³ and the water content should be between 7 and 13%.

Die so gewonnene mineralische Sperrschicht 16 weist ein gutes Lastverhalten auf.The mineral barrier layer 16 obtained in this way has good load behavior.

Über der Sperrschicht 16 befindet sich Verbundsteinpflaster 20 mit Fugen 22. Die Fugen 22 weisen eine Stärke von 3 mm auf und sind mit Sand/Zement 3 : 1 eingeschlämmt. Die Fugen 22 des Verbundsteinpflaster 20 bestehen aus Sand/Zement-Schlämmen mit einem Zusatz aus einem sogenannten Feingemisch aus Sand und Bentonit. Die Sand/Zement-Schlämme weisen beim Ausführungsbeispiel ein Verhältnis von Sand zu Zement gleich 3 : 1 auf. Der Zusatz des Feingemisches aus Sand und Bentonit beträgt 5 bis 20, vorzugsweise 10 %. Dabei ist die Körnung des Sandes 0 bis 2 mm und das Verhältnis Sand zu Bentonit ist bevorzugt gleich 5 : 2.Composite stone paving 20 with joints 22 is located above the barrier layer 16. The joints 22 have a thickness of 3 mm and are slurried with sand / cement 3: 1. The joints 22 of the composite stone paving 20 consist of sand / cement slurries with an addition of a so-called fine mixture of sand and bentonite. The sand / cement slurries in the exemplary embodiment have a ratio of sand to cement equal to 3: 1. The addition of the fine mixture of sand and bentonite is 5 to 20, preferably 10%. The grain size of the sand is 0 to 2 mm and the ratio of sand to bentonite is preferably 5: 2.

Statt der oben beschriebenen Fugen kann an den Kanten des Bodens auch eine Abdichtung mit einem Bentonit-Voranstrich erfolgen.Instead of the joints described above, the edges of the floor can also be sealed with a bentonite primer.

Der erfindungsgemäße Boden bietet Schutz gegen Schadstoffe, insbesondere Kohlenwasserstoffe, da zwischen dem hydrophoben Kohlenwasserstoff und der hydrophilen Sperrschicht keine Vernetzung auftritt. Der hohe Bentonitanteil von 10 M.-% oder mehr in der mineralischen Sperrschicht erhöht die Sorptionsfähigkeit erheblich.The floor according to the invention offers protection against pollutants, in particular hydrocarbons, since no crosslinking occurs between the hydrophobic hydrocarbon and the hydrophilic barrier layer. The high bentonite content of 10% by mass or more in the mineral barrier layer increases the sorbability considerably.

Claims (9)

Mehrschichtiger Boden für Plätze zum Ab- und Umfüllen von wassergefährdenden Stoffen mit einer Ton enthaltenden Sperrschicht,
dadurch gekennzeichnet, daß - die Sperrschicht (16) eine Mischung aus 40 - 80% Kies, 20 - 40% Sand und 5 - 25% Bentonit aufweist, und daß - die Sperrschicht verdichtet ist, insbesondere auf Verdichtungswerte von mindestens 2,0 t/m³, vorzugsweise auf Verdichtungswerte von mindestens 2,1 t/m³. Multi-layer floor for places for filling and decanting of water-polluting substances with a barrier layer containing clay,
characterized in that - The barrier layer (16) has a mixture of 40-80% gravel, 20-40% sand and 5-25% bentonite, and that - The barrier layer is compressed, in particular to compression values of at least 2.0 t / m³, preferably to compression values of at least 2.1 t / m³. Boden nach Anspruch 1,
dadurch gekennzeichnet, daß über der Sperrschicht (16) eine Pflasterschicht (20) angeordnet ist.Floor according to claim 1,
characterized in that a plaster layer (20) is arranged over the barrier layer (16). Boden nach Anspruch 2,
dadurch gekennzeichnet, daß die Pflasterschicht (20) mit einer Zement/Sand-Mischung 3:1 gefüllte Fugen (22) aufweist.Floor according to claim 2,
characterized in that the plaster layer (20) has 3: 1 joints (22) filled with a cement / sand mixture. Boden nach Anspruch 3,
dadurch gekennzeichnet, daß der Sand/Zement-Mischung eine Feinmischung von 60 bis 80 M.-% Sand einschließlich eines Füllers, und 20 bis 40 M.-% Bentonit, vorzugsweise 30 % Bentonit, zugesetzt ist.Floor according to claim 3,
characterized in that a fine mixture of 60 to 80 mass% sand including a filler, and 20 to 40 mass% bentonite, preferably 30% bentonite, is added to the sand / cement mixture. Boden nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß an seitlichen Rändern der Sperrschicht (16), insbesondere Übergangsstellen zu Zapfinseln oder dergleichen, ein Anstrich (26) aus Bentonit vorgesehen ist.Floor according to one of the preceding claims,
characterized in that a coating (26) of bentonite is provided on the lateral edges of the barrier layer (16), in particular transition points to petrol pumps or the like. Boden nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Sperrschicht (16) 6 bis 20 cm stark ist.Floor according to one of the preceding claims,
characterized in that the barrier layer (16) is 6 to 20 cm thick. Boden nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß unter der Sperrschicht (16) eine Tragschicht (14) aus einem Mineralgemisch angeordnet ist.Floor according to one of the preceding claims,
characterized in that a support layer (14) made of a mineral mixture is arranged under the barrier layer (16). Boden nach Anspruch 7,
dadurch gekennzeichnet, daß unter der Tragschicht (14) eine Frostschutzschicht (12) angeordnet ist.Floor according to claim 7,
characterized in that a frost protection layer (12) is arranged under the base layer (14). Verfahren zur Erzeugung eines Bodens für Plätze zum Ab- und Umfüllen von wassergefährdenden Stoffen mit folgenden Schritten: - Aufbringen einer Frostschutzschicht (12) auf das Erdreich, - Aufbringen einer Tragschicht (14) auf die Frostschutzschicht (12), - Aufbringen einer Sperrschicht (16) auf die Tragschicht (14), wobei die Sperrschicht eine trockene Mischung aus 40 - 80% Kies, 20 - 40% Sand und 5 - 25% Bentonit aufweist, - Verdichten der Sperrschicht (16) auf eine Trockendichte von mindestens 2,0 t/m³, bevorzugt mindestens 2,1 t/m³, und - Einschlämmen der Fugen (22) einer über der Sperrschicht (16) angeordneten Pflasterschicht (20) mit einer Sand/Zement-Mischung im Verhältnis 3:1. Process for creating a floor for places for filling and decanting water-polluting substances with the following steps: - applying a frost protection layer (12) to the ground, - applying a base layer (14) to the frost protection layer (12), Applying a barrier layer (16) to the base layer (14), the barrier layer comprising a dry mixture of 40-80% gravel, 20-40% sand and 5-25% bentonite, - Compacting the barrier layer (16) to a dry density of at least 2.0 t / m³, preferably at least 2.1 t / m³, and - Slurrying the joints (22) of a plaster layer (20) arranged above the barrier layer (16) with a sand / cement mixture in a ratio of 3: 1.
EP90108137A 1990-04-27 1990-04-27 Multilayered ground for areas in which water polluting substances are poured or transferred Withdrawn EP0453619A1 (en)

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EP90108137A EP0453619A1 (en) 1990-04-27 1990-04-27 Multilayered ground for areas in which water polluting substances are poured or transferred

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EP90108137A EP0453619A1 (en) 1990-04-27 1990-04-27 Multilayered ground for areas in which water polluting substances are poured or transferred

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
DE9415479U1 (en) * 1994-09-24 1994-11-24 Kruß, Heinrich, 47669 Wachtendonk Floor surface contaminated with toxins and paved with water-permeable paving stones
DE29617104U1 (en) * 1996-10-01 1996-11-28 Gutting, Horst Michael Ulrich, 68782 Brühl Gas station
DE10018862A1 (en) * 2000-04-17 2001-10-18 Birco Baustoffwerk Gmbh Cover system, in particular, for places where substances exposed to ground water hazards are dealt with comprises a layer of plates on top of plaster, sealing and load carrying layers
EP1387011A1 (en) * 2002-08-02 2004-02-04 Weco Bahnüberwege- Und Auffangwannenbau Gmbh System for avoiding the spillage of oil and method for avoiding spillage of oil
DE102010026863A1 (en) * 2010-07-12 2012-01-12 K+S Aktiengesellschaft Base seal of a heap, especially a residue salt heap
US8920693B2 (en) 2011-02-04 2014-12-30 Universität Kassel Method for the production of a fiber-reinforced thermoplastic polymer and extrusion die and device for the temperature control a fiber strand impregnated with a polymer melt

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Title
PT CIVIELE TECHNIEK. vol. 40, no. 4, April 1985, RIJSWIJK NL Seiten 27 - 33; MISCHGOFSKY: "BODEMSANERING" *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9415479U1 (en) * 1994-09-24 1994-11-24 Kruß, Heinrich, 47669 Wachtendonk Floor surface contaminated with toxins and paved with water-permeable paving stones
DE29617104U1 (en) * 1996-10-01 1996-11-28 Gutting, Horst Michael Ulrich, 68782 Brühl Gas station
DE10018862A1 (en) * 2000-04-17 2001-10-18 Birco Baustoffwerk Gmbh Cover system, in particular, for places where substances exposed to ground water hazards are dealt with comprises a layer of plates on top of plaster, sealing and load carrying layers
EP1387011A1 (en) * 2002-08-02 2004-02-04 Weco Bahnüberwege- Und Auffangwannenbau Gmbh System for avoiding the spillage of oil and method for avoiding spillage of oil
DE102010026863A1 (en) * 2010-07-12 2012-01-12 K+S Aktiengesellschaft Base seal of a heap, especially a residue salt heap
WO2012006981A1 (en) 2010-07-12 2012-01-19 K + S Aktiengesellschaft Base seal for a stockpile, in particular a residual salt stockpile
DE102010026863B4 (en) * 2010-07-12 2013-05-29 K+S Aktiengesellschaft Base seal of a heap, especially a residue salt heap
US8920693B2 (en) 2011-02-04 2014-12-30 Universität Kassel Method for the production of a fiber-reinforced thermoplastic polymer and extrusion die and device for the temperature control a fiber strand impregnated with a polymer melt

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